QuakeIndex

quarry blast · reviewed by a seismologist

M 1.5ml

5 km WNW of Farmers Loop, Alaska

· 0.0 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fairbanks North Star Borough 68 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.5 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Fairbanks North Star Borough, 68 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 62 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 64.9270, -147.8070. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fairbanks North Star Borough, AK 68 km (42 mi) WNW of here earthquakes near Fairbanks North Star Borough

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

13 earthquakes have been recorded within 50 km since this one.

  1. 2.1 11 km SW of South Van Horn, Alaska
  2. 1.8 4 km NW of Fox, Alaska
  3. 1.5 8 km ENE of Badger, Alaska
  4. 0.9 8 km ENE of Fox, Alaska
  5. 1.3 6 km E of Fox, Alaska
  6. 1.0 7 km S of South Van Horn, Alaska
  7. 1.4 11 km ENE of Fox, Alaska
  8. 1.5 13 km S of South Van Horn, Alaska
  9. 2.7 20 km S of South Van Horn, Alaska
  10. 1.5 3 km ESE of Badger, Alaska
  11. 2.4 7 km ENE of Fox, Alaska
  12. 2.0 14 km SSW of Ester, Alaska
  13. 1.6 9 km SSW of South Van Horn, Alaska

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.